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EP4427929A1 - Élément de construction et son procédé de fabrication et d'utilisation - Google Patents

Élément de construction et son procédé de fabrication et d'utilisation Download PDF

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Publication number
EP4427929A1
EP4427929A1 EP23160499.2A EP23160499A EP4427929A1 EP 4427929 A1 EP4427929 A1 EP 4427929A1 EP 23160499 A EP23160499 A EP 23160499A EP 4427929 A1 EP4427929 A1 EP 4427929A1
Authority
EP
European Patent Office
Prior art keywords
construction element
rigid foam
foam core
layer
building material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP23160499.2A
Other languages
German (de)
English (en)
Inventor
Enrico Dauksch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP23160499.2A priority Critical patent/EP4427929A1/fr
Publication of EP4427929A1 publication Critical patent/EP4427929A1/fr
Withdrawn legal-status Critical Current

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    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/263—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer having non-uniform thickness
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    • B32B13/04—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B13/045—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
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    • B32B13/14—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material next to a fibrous or filamentary layer
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    • B32B19/047—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica next to another layer of the same or of a different material of foam
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Definitions

  • the invention relates to a construction element, a method for its production and its use.
  • Construction elements can be used, for example, to build a wall or ceiling, to cover the surface of an existing wall or ceiling, or to build a floor on an existing floor slab or floor slab in buildings. Good thermal insulation and, depending on the specific application, watertightness are often desirable for this purpose.
  • the building boards currently in use are often designed as composite boards and usually have a rigid foam core made of extruded polystyrene, which is covered on both sides by a stiffening surface layer that protects the rigid foam core from damage and serves as an adhesive base for the top layer of the component.
  • Extruded polystyrene has a high density and compressive strength and has a homogeneous structure.
  • rigid foam made from expanded polystyrene is characterized by its coarse-grained structure. Due to its very low thermal conductivity, expanded polystyrene is used as a single-layer board for heat and impact sound insulation. As a composite board, it is sometimes attached as a one-sided layer to rigid boards, such as plasterboard.
  • Both of the rigid foam materials mentioned have a low Density and a closed-cell structure. They are resistant to the effects of water and moisture. The latter applies in particular to extruded polystyrene due to its uniform structure.
  • construction element with improved thermal insulation properties. It would also be desirable to have a construction element that can be manufactured as energy-efficiently as possible and whose building physics properties essentially correspond to those of a construction element made of extruded polystyrene. In addition, the construction element should also be usable in damp rooms, especially in those damp rooms in which there are special requirements for the sealing of fittings in order to protect the building.
  • the construction element has a waterproof rigid foam core made of polyethylene terephthalate.
  • the rigid foam core consists essentially of polyethylene terephthalate, i.e. in addition to polyethylene terephthalate, non-mechanically acting additives such as color pigments, fire retardants, antifungal agents, etc.
  • Polyethylene terephthalate is a thermoplastic from the polyester family produced by polycondensation of terephthalic acid and ethylene glycol.
  • the molecular formula of the repeating unit is: C 10 H 8 O 4 , the molar mass of the repeating unit is 192.17 g/ml and the CAS number is 25038-59-9 .
  • Rigid foam is understood to mean a foamed material or foam that offers such a high resistance to deformation under pressure that it can be used as a construction material.
  • core refers here to a component of the construction element that is at least partially or partially covered by another component of the construction element.
  • the rigid foam core can be designed as a rigid foam panel.
  • a "plate” is understood to mean a flat object that has a top side and a bottom side arranged opposite the top side, for example essentially parallel to the top side, as well as several side surfaces, the size of the side surfaces being significantly smaller than the area of the top and bottom sides.
  • the plate can be cuboid-shaped, with the top and bottom sides forming the base and top surfaces of the cuboid.
  • the base and top surfaces can also be non-rectangular, for example triangular, trapezoidal or hexagonal.
  • the plate can be deformed starting from a cuboid shape, for example to adapt to structural conditions or to create a gradient.
  • the plate can have recesses or projections or bevelled areas.
  • the watertightness of the rigid foam core made of polyethylene terephthalate results from the essentially closed-cell structure of the rigid foam core. Closed-cell or closed-pore means that the cells or pores of the rigid foam are closed and therefore do not interconnect. In a largely closed-cell rigid foam core, the majority of the cells are closed, but individual cells can interconnect and, in particular, cells on the surface of the rigid foam core can be open to the outside.
  • the closed-cell design of the rigid foam core means that water or moisture cannot penetrate into or through the rigid foam core, or can only do so to a limited extent.
  • the rigid foam core is therefore waterproof, i.e. impermeable to water. This means in particular that, due to the largely closed-cell rigid foam core, moisture cannot spread in a damaging way either in the thickness direction of the structural element, e.g. the structural panel, or within the structural element.
  • a rigid foam core can be considered "waterproof” if it can withstand a water column of 800 mm, preferably 2000 mm, more preferably 10,000 mm and particularly preferably 30,000 mm in accordance with the DIN EN 343:2019-06 standard.
  • the construction element can preferably insensitive to moisture and therefore suitable for water exposure classes W2-I and W3-I according to DIN 18534-1: 2017-07. Furthermore, the construction element can preferably comply with DIN EN ISO 16535:2019-10.
  • the thickness of the rigid foam core can preferably be between 3 and 100 mm. In combination with a density between 30 and 300 kg/m 3, this can lead to sufficient insulating properties for most applications.
  • the main advantages of construction elements with a rigid foam core made of polyethylene terephthalate are excellent mechanical properties, which allow, for example, fastening elements such as nails, screws, dowels, etc. to be inserted directly into the construction element.
  • the mechanical properties of the closed-cell and therefore waterproof rigid foam core also allow mechanical connection to construction elements using conventional assembly screws without additional gluing.
  • the rigid foam core used in the invention also has a sufficiently good screw pull-out resistance, so that screws and similar connecting elements are anchored directly in the rigid foam core with sufficient pull-out resistance.
  • the proposed construction element is characterized by a low specific weight, which makes handling and transport considerably easier and can have a positive effect on static issues.
  • Long-term fatigue tests have shown structural and dimensional long-term stability for construction elements with polyethylene terephthalate as a rigid foam core, which is particularly desirable for building products.
  • the long-term stability of the insulation properties and the associated reliable insulation performance as well as the moisture-repellent closed-cell and homogeneous structure are properties that are desirable in rooms in which moderate to high levels of moisture are to be expected.
  • the homogeneous surface also allows for a smooth and glossy coating, which can also be used as a finished surface and is easy to clean.
  • the construction element according to the invention has a significantly lower heat transfer coefficient, also known as the U-value. This means that a construction element with a smaller thickness is sufficient for the same thermal insulation effect, which increases the variety of construction and allows the areas of application of the proposed construction element to be expanded.
  • polyethylene terephthalate is advantageous in terms of energy balance and also in terms of the sustainability of the construction element if the rigid foam core is designed according to the Invention contains recycled polyethylene terephthalate or consists of recycled polyethylene terephthalate.
  • Polyethylene terephthalate is used in particular for the production of drinking bottles and a wide variety of food films, which are disposed of after use and increasingly recycled. This means that a raw material with a good energy balance is available, which, with suitable production-related measures, allows climate-neutral production of the rigid foam core.
  • the rigid foam core itself can be recycled.
  • polyethylene terephthalate means that, in contrast to the core materials known from the state of the art, the production and subsequent disposal of the rigid foam core can be done using a starting material that is easy to recycle economically and ecologically.
  • Efficient recycling systems for polyethylene terephthalate already exist in many places, particularly in connection with disposable drinks bottles. Recycled polyethylene terephthalate can also be used to produce the proposed rigid foam core, even though it is no longer suitable for other applications due to its color or the slight impurities it contains.
  • At least one layer with a mineral building material is arranged, e.g. applied, on a surface of the rigid foam core.
  • the layer thickness of the layer with the mineral building material can preferably be between 0.5 mm and 10 mm.
  • the layer with the mineral building material can preferably be applied to the top or bottom of the rigid foam core.
  • a layer with a mineral building material can be arranged on both the top and bottom of the rigid foam core, whereby the layers can be constructed in the same or different ways, for example with regard to the mineral building material, the layer thickness and/or an optionally introduced reinforcement.
  • the layer with the mineral building material can be placed directly on a surface of the rigid foam core, i.e. without any intermediate layers or coatings.
  • the rigid foam core can be provided with a primer or undercoat to achieve better adhesion of the layer with the mineral building material.
  • the rigid foam core can be provided with a sanding to which the layer with the mineral building material is applied. This can also help to improve adhesion. Sanding the rigid foam board can also be used to improve the thickness consistency of the rigid foam board.
  • the layer or layers containing the mineral building material may consist of the mineral building material.
  • a “mineral building material” is understood here to mean an inorganic, non-metallic substance made up of crystalline components.
  • This can be natural minerals, such as natural stone, sand or clay, or a shaped mixture of sieved or ground minerals, which is given the desired strength by crystallization of binding agents, such as anhydrite, burnt lime, clay minerals, cement.
  • binding agents such as anhydrite, burnt lime, clay minerals, cement.
  • Small amounts of organic components, e.g. polymers can be added optionally. which can serve, for example, as excipients.
  • the mineral building material can be mortar and/or concrete, i.e. a mortar and/or concrete layer or a layer containing mortar and/or concrete can be applied to at least one surface of the rigid foam core.
  • “Mortar” is a mixture of aggregate with a grain size of 4 mm or less, added water and a binding agent, e.g. lime and/or cement.
  • the aggregate can be sand and/or fine gravel, for example.
  • the mortar can be mortar in accordance with DIN EN 998-1:2017-02, Part 1, for example.
  • Concrete is a building material that is mixed as a dispersion with the addition of liquid from a binding agent, e.g. cement, and aggregates, e.g. aggregate with a grain size of no more than 32 mm.
  • the concrete can, for example, be concrete in accordance with DIN EN 206:2021-06.
  • plastic-modified PCM polymer cement mortar
  • PCC polymer cement concrete
  • mineral sealing slurries can be used to seal solid components indoors and outdoors as mineral building material. These are characterized by easy processing, good adhesion without primer on slightly damp substrates and high frost and ageing resistance. They can also be used with negative water pressure and are vapor permeable.
  • a so-called CO2 -reduced mineral building material can preferably be used, in which the greenhouse gas emissions are reduced compared to a previously common mineral building material by one or more of the following measures: use of non-fossil secondary fuels, reduction of energy consumption in production, reduction of raw material-related process emissions, e.g. by using less limestone.
  • a so-called flexible adhesive e.g. C2TE flexible adhesive, also with reduced dust
  • a so-called flexible adhesive can be used as a mineral building material.
  • CO 2 can be saved thanks to climate-friendly and resource-saving binding agent technology.
  • the Airflow Technology makes the flexible adhesive particularly easy and smooth to process.
  • a climate-friendly binding agent with latent hydraulic components around 5 - 60% CO 2 can be saved during cement production.
  • the layer with the mineral building material can contain a combination of the above-mentioned mineral building materials, for example in the form of a mixture of substances or in the form of several sub-layers, each of which uses a different mineral building material.
  • the layer with the mineral building material can be permeable to water. Since the rigid foam core is already waterproof, it is not necessary to make the layer with the mineral building material waterproof, so that a greater variety of materials is available for this layer and layers can also be applied that can be further treated in a simple manner, for example without pre-treatment, e.g. with a coat of paint.
  • the construction element can have reinforcement.
  • the reinforcement can be designed, for example, as reinforcing fabric and/or reinforcing fleece.
  • the reinforcement can, for example, have glass fibers, carbon fibers, basalt fibers and/or natural fibers, e.g. jute fibers.
  • a "nonwoven” is a fabric made of aligned or randomly arranged fibers, filaments and/or cut yarns. The spun fibers or filaments are glued, welded, sewn or needled together. The nonwoven can be waterproof. A nonwoven is characterized by a homogeneous surface. It is also possible to prefabricate a nonwoven with a finished surface so that no or only minimal post-processing is required.
  • a “fabric” is understood to mean a textile fabric consisting of at least two Thread systems, warp and weft, which intersect in a pattern at an angle of exactly or approximately 90° when viewed on the fabric surface.
  • the reinforcement can be arranged directly on the rigid foam core, i.e. between the rigid foam core and the layer with the mineral building material.
  • the layer with the mineral building material can contain reinforcement, resulting in the sequence mineral building material - reinforcement - mineral building material.
  • the reinforcement can absorb tensile forces of the mineral building material and/or the entire construction element.
  • cracking for example caused by uneven drying of the mineral building material, can be reduced.
  • a mineral layer with higher mechanical stability can be obtained.
  • the layer with the mineral building material forms an extremely strong adhesive base when the reinforcement is embedded in it.
  • the rigid foam core can be uneven at least in sections.
  • the rigid foam core made of polyethylene terephthalate can be thermoformed, ie the three-dimensional shape can be changed by the application of heat.
  • the rigid foam core can be shaped before the layer(s) with the mineral building material are arranged.
  • the shaping can be used to adapt the rigid foam core to structural conditions, for example. Deformations within a surface are also possible.
  • the rigid foam core can be uneven, at least in sections, for example, it can be uneven on one side. Uneven means that the points on the surface of the rigid foam core are not in the same plane.
  • the shape of the rigid foam core can be transferred to the entire construction element.
  • the construction element can have at least one cover layer.
  • a covering layer can be arranged on one or more layers with the mineral building material and/or a covering layer can be arranged directly on the rigid foam core.
  • the same material can be applied as a covering layer on both sides of the rigid foam core in order to avoid opposing deformation or cupping.
  • the covering layer can, for example, comprise one or more covering elements.
  • the covering layer can, for example, be used for the aesthetic and/or functional design of the construction element, for example by applying a layer of paint or varnish as a covering layer, which, in addition to having a design effect, also serves to protect the underlying layer with the mineral building material and the rigid foam core.
  • the top layer can be water-repellent, waterproof and/or self-cleaning, e.g. based on the model of the lotus plant.
  • the top layer can also be made of a fleece or a high-pressure laminate (HPL), for example.
  • covering layers include tiles, laminates or plastic coatings.
  • the properties of the construction element can be specifically adjusted so that the construction element can be designed according to requirements.
  • the rigid foam core can have a density in the range between 30 and 300 kg/m 3 , preferably from 60 to approx. 300 kg/m 3 , and/or a compressive strength in the range from 100 kPa to 2,000 kPa.
  • a construction element with a low surface weight can be obtained, which is therefore flexible in use and does not require any special fastening.
  • the construction element can be used for various purposes and designs, which can also be achieved with the desired stability and insulation.
  • the high stability is achieved, among other things, by the compressive strength of the polyethylene terephthalate, which can be in the range of 100 to 2,000 kPa, for example in the range of 200 to 2,000 kPa.
  • the low density at High stability in combination with the diversity of the surface also allows the prefabrication of finished room components, such as shower cubicles or entire bathroom cubicles, using the described construction element.
  • the construction element does not have a waterproof layer or coating.
  • an additional waterproof layer can preferably be omitted.
  • the rigid foam core can have several polyethylene terephthalate layers.
  • the rigid foam core can be made up of several layers, particularly in a plate-shaped design, whereby these layers can optionally have different thicknesses and/or densities.
  • those layers of the rigid foam core in the areas in which, for example, a mounting screw is to be anchored or a plug connection is to be made can have higher densities than those that are subject to less mechanical stress. In this way, both the thermal insulation value of the construction element can be increased and the weight of the construction element can be reduced. At the same time, this can reduce the amount of polyethylene terephthalate raw material required for production.
  • the The construction element can be designed as a building panel or shower floor element.
  • building board refers to a board-shaped object that can be used for structural building, for example for erecting a wall or ceiling, for surface cladding of an existing wall or ceiling, for building a floor on an existing floor slab or floor slab.
  • shower floor element refers to a supporting element for a shower area which, in conjunction with the subfloor or a substructure, is strong enough to bear the standard weight of the user of the shower area.
  • shower floor elements can be very low so that they can be fully integrated into the floor structure, possibly including the drainage pipes and/or a step or threshold.
  • shower floor elements can be covered with a tile covering that is produced on site or with a surface-finished, plate-like covering layer.
  • the latter can be thinner than a tile covering and can also be designed very variably and individually according to customer requirements, both in terms of geometry and surface design.
  • a drain for the shower water can be formed in the shower floor element.
  • This can include a drain opening and a drain area incorporated in the top of the shower floor element.
  • the latter has a The floor plan and the degree of the gradient can be varied according to the planning specifications and rules.
  • the top of the shower floor element can also have a flat edge area, i.e. one that is on one level. Such an edge area, which is above the drain opening by the amount of the gradient, is obviously intended to prevent water standing in the shower floor element from flowing over the edge at lower points or standing on upright walls.
  • the width of the edge area can be very variable, even very narrow.
  • a covering layer e.g. a covering element or a covering plate
  • this also has a corresponding drainage opening.
  • the covering layer is firmly connected in a suitable manner to the top of the underlying layer or the underlying rigid foam core.
  • the covering layer can be designed as a single or multi-part plate, as an applied floor covering, e.g. tile covering, or as a coating.
  • Such shower floor elements are used in particular for floor-level showers, where the shower floor is at the same or only slightly higher level as the surrounding floor.
  • a significant advantage of these floor-level showers is the improved accessibility due to the lack of steps.
  • the drain openings and the The shower floor slope leading to the latter must be designed accordingly and, if necessary, combined with suitable floor thresholds or low-height steps from the shower floor element to the adjacent floor.
  • the rigid foam core is deformable as described above, so that the slope and other uneven areas of the rigid foam core can be formed by deep drawing, as explained in more detail below. This enables efficient production of the shower floor element and a wide range of design options with regard to its geometry.
  • the "top” and “bottom” of the elements mentioned usually refer to the upper and lower surfaces of the element in question, following the direction of gravity.
  • the surfaces connecting the two surfaces are, also in accordance with the generally accepted term, the side surfaces.
  • a further aspect relates to a method for producing a construction element.
  • the method comprises: providing a waterproof rigid foam core made of polyethylene terephthalate and arranging a layer with a mineral building material on at least one surface of the rigid foam core.
  • one of the structural elements described above can be manufactured.
  • the explanations for these structural elements are based on their manufacturing process. transferable.
  • the advantages of the proposed design elements are correspondingly linked to the manufacturing process.
  • the method may comprise arranging a covering layer on the layer with the mineral building material.
  • the method can also optionally include pretreatment of the rigid foam core before arranging the layer with the mineral building material.
  • pretreatment can, for example, include cleaning and/or roughening the surface of the rigid foam core before arranging the layer with the mineral building material. This can improve the adhesion of the layer with the mineral building material to the rigid foam core, which can improve the mechanical stability of the construction element overall.
  • the rigid foam core can be coated with a primer or undercoat to achieve better adhesion of the layer to the mineral building material.
  • the rigid foam core can be sanded onto which the layer with the mineral building material is applied. This can also help to improve adhesion.
  • the rigid foam core can be sanded before applying the layer of mineral building material to improve the consistency of thickness. Since thermal or mechanical cutting of the rigid foam core often results in a rigid foam core with insufficient flatness, sanding can be used to achieve flatness within a specified tolerance range. Grinding or sanding can also lead to improved bonding with reinforcement, e.g. a fleece, as it is easier to apply an adhesive with a more even layer thickness.
  • reinforcement e.g. a fleece
  • reinforcement can optionally be introduced into this layer.
  • a first partial layer with the mineral building material can be applied to the rigid foam core, onto which the reinforcement is placed and then covered with a second partial layer with the mineral building material.
  • the production of the proposed construction element can preferably be carried out in a continuous process, whereby the layer with the mineral building material, the covering layer and/or, if necessary, further layers are applied to the rigid foam core via coating machines.
  • uneven sections and/or a gradient can be formed in the structural element by deep drawing during the manufacture of the structural element. Maintaining the thickness in the deep-drawn area of the rigid foam core, as is known from deep-drawing processes for metallic plates, is not necessary. Depending on the desired profile of the rigid foam core, the recesses can be formed on one or both sides. Deep drawing can be carried out in various ways, for example with deep-drawing tools such as a die and stamp, or with a deep-drawing medium such as a liquid- or gas-filled stamp pad.
  • a gradient can be introduced into the top of the construction element by placing its hard foam core on an optionally flat base and deforming it on the top using a stamp or stamp pad, optionally with a membrane in between.
  • the stamp pad is a pad preferably filled with a liquid, optionally with a gas, the shape of the surface on the underside of which corresponds to that of the gradient to be created.
  • the deep drawing can be carried out under the influence of heat, whereby the temperature is selected in such a range that a weakening of the load-bearing properties or structural damage to the rigid foam that impairs the usability of the rigid foam core.
  • a further aspect of the invention relates to the use of a construction element as described above for erecting a wall or ceiling, for surface cladding of an existing wall or ceiling, for constructing a floor on an existing floor slab or floor slab, e.g. in buildings, or for producing a standing area of a shower area.
  • the construction element is particularly suitable for the formation of a shower floor element, which can, for example, form a standing area for a shower area.
  • the construction element can be used in particular for those components in a building that are exposed to increased moisture loads, such as bathrooms, sauna rooms, unheated or poorly heated rooms in an otherwise heated building and the like.
  • the construction element can be used, for example, to produce partition walls, subdivisions of a room, casings for built-in components, interior roof cladding and the like.
  • a further aspect of the invention relates to a building object with a construction element according to the above description.
  • the construction object can be a stationary object, such as a building, or a mobile object, such as a mobile home or similar.
  • Fig.1 shows an exemplary construction element 1 in a schematic representation, which is designed as a building board.
  • the construction element 1 comprises a waterproof rigid foam board made of polyethylene terephthalate as the rigid foam core 2.
  • the rigid foam core 2 has a density in the range between 30 and 300 kg/m 3 and a compressive strength in the range of 100 kPa to 2,000 kPa.
  • the polyethylene terephthalate is preferably at least partially recycled polyethylene terephthalate.
  • the rigid foam core 2 is completely flat. Depending on the intended use, however, the rigid foam core 2 can also be uneven in at least some sections, e.g. on the top side.
  • the rigid foam core 3 is provided on both sides, i.e. on the top and bottom, with a layer 3', 3" each comprising a mineral building material.
  • these are mortar layers with an embedded reinforcing fabric made of glass fibers (not shown).
  • the construction board has only the rigid foam core 2 and the two layers 3', 3" with the mineral building material. In other words, there are no further layers or coatings, in particular no waterproof layers or coatings.
  • the waterproofness of the construction element 1 results solely due to the waterproof design of the rigid foam core 2.
  • Fig.2 shows another exemplary construction element 1.
  • the construction element 1 according to Fig.2 additionally has a covering layer 4, which is applied to the upper layer 3' with the mineral building material.
  • the covering layer 4 can be designed, for example, as a tile covering or paint coating.
  • a further covering layer can also be applied to the lower layer 3" with the mineral building material (not shown).
  • the building board has only the rigid foam core 2, the two layers 3', 3" with the mineral building material and the cover layer 4. In other words, there are no further layers or coatings, in particular no waterproof layers or coatings.
  • the waterproofness of the construction element 1 results solely from the waterproof design of the rigid foam core 2.
  • Fig.3 shows a construction element 1, which is designed as a shower floor element, in plan view.
  • the upper, in Fig.3 The visible end of the shower floor element is formed by a cover layer 4, which is formed as a one-piece, surface-finished cover element made of, for example, but not limited to, a mineral material or plastic.
  • the cover layer 4 is as shown in Fig.2 described on the underlying, in Fig.2 not recognizable layer 3' with the mineral building material arranged and fixed.
  • the cover layer 4 has a drainage channel 5, in the middle of which a circular drainage opening 6 is formed.
  • the cover layer 4 also has expertly formed slopes 7, which run from each side edge of the cover layer 4 to the corresponding side edge of the drainage channel 8.
  • the slope 7 was formed by deep-drawing the rigid foam core 2, before a layer 3' with the mineral building material was applied to the top of the rigid foam core 2 and the cover layer 4 was applied on top.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Building Environments (AREA)
EP23160499.2A 2023-03-07 2023-03-07 Élément de construction et son procédé de fabrication et d'utilisation Withdrawn EP4427929A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120045602A1 (en) * 2010-08-18 2012-02-23 Armacell Enterprise Gmbh Protected expanded polyalkylidene terephthalates
US20170362835A1 (en) * 2016-06-21 2017-12-21 MGNT Products Group, LLC Laminated foam composite backer board for wet space construction
US20220034089A1 (en) * 2018-12-05 2022-02-03 Jd Composites Inc. Pet foam structural insulated panel for use in residential construction and construction method associated therewith
US20220178151A1 (en) * 2020-12-09 2022-06-09 Dmx Plastics Limited Foam board articles
EP4079204A1 (fr) * 2021-04-23 2022-10-26 Enrico Dauksch Élément de fond de douche et son procédé de fabrication

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120045602A1 (en) * 2010-08-18 2012-02-23 Armacell Enterprise Gmbh Protected expanded polyalkylidene terephthalates
US20170362835A1 (en) * 2016-06-21 2017-12-21 MGNT Products Group, LLC Laminated foam composite backer board for wet space construction
US20220034089A1 (en) * 2018-12-05 2022-02-03 Jd Composites Inc. Pet foam structural insulated panel for use in residential construction and construction method associated therewith
US20220178151A1 (en) * 2020-12-09 2022-06-09 Dmx Plastics Limited Foam board articles
EP4079204A1 (fr) * 2021-04-23 2022-10-26 Enrico Dauksch Élément de fond de douche et son procédé de fabrication

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